M 4 in Puerto Rico on 23 Oct 2009 03:14 UTC

Hazard models

EQ parameters
Shakemap
Tsunami

Event summary

This earthquake is expected to have a low humanitarian impact based on the magnitude and the affected population and their vulnerability.

Earthquake Magnitude: 4.0M
Depth: 35 Km
Lat/Lon: 19.4077 , -65.5102
Event Date: 23 Oct 2009 03:14 UTC
22 Oct 2009 23:14 Local
Exposed Population:
no people within 100km
Source: NEIC prp0929602
Inserted at: 23 Oct 2009 04:05 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0.5 0.5
prp0929602 Scaled population (vector) n.a  
  C1 earthquake n.a  
  C2 earthquake n.a  
  Country Vulnerability n.a  
  INFORM_normalised n.a  
Maximum expected impact using different data sources.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
68298 0.5 23 Oct 2009 03:14 4M, 35km N/A No people affected (in 100km) 00:50 NEIC
The episode that generated the alert; the next major evaluations beyond 12 hours will not trigger additional alerts.
The episode that has the last updated information.
* The max MMI detected for sources having shakemaps;
** The population detected in MMI>=7 for episode with shakemap or in a 100km radius;
*** The tsunami max height.

Exposed population

The earthquake happened in Puerto Rico , District of Humacao. The nearest places are Carolina, and San Juan.

Radius Population
100 km no people
75 km no people
50 km no people
20 km no people
10 km no people
5 km no people
2 km no people

Affected Provinces

Region Province Country Population
Humacao Puerto Rico -
Bayamon Puerto Rico -

Affected populated places

Name Region Province Country City class Population Distance
Carolina Carolina Puerto Rico Major city 170000 people 123 km
San Juan San Juan Puerto Rico Capital 420000 people 123 km

see full list

Critical infrastructure

Airports, ports, nuclear plants and hydrodams at risk, if affected, are listed below.

More information

For a full list of available products related to this event, please refer to the GDACS Resources page.